64 suburban upgrades vs swapping body to 89 Suburban frame/drivetrain

[Chuck78]

After going to this old yard to cut some parts off of two 72 Camaros, and dig up a few other things including 9 leaf springs for my 89 Suburban, I have since fallen in love with this purple 64 Suburban body that's there... Body needs less work than my 89 does, and has some serious style. Not sure how rusty the frame may be, as it's buried in weeds and it didn't quite strike me the same until after going to a ratt rod show immediately afterwards. The engine is a 6 banger that has problems.
I was thinking,...that would be so great if I could keep my chassis and running gear/drivetrain all together and just clean up the frame, and swap this whole body on. That way I could just worry about things like steering swap, things that attach to the firewall, splicing wiring harnesses together, and instrumentation... It'd be awesome to have more modern suspension and brakes and a solid chassis with a fuel injected 350 and 4 speed automatic, but the killer style of a 64 Suburban body... Man that is a killer ride! Not sure how all of you would feel about this, but I'd like to hear somoe opinions.

This is seriously all I can think about today....

Anyone have any clue as to how easily the 64 body would drop onto my 89 chassis? The bodies from 73 all the way up to 90 Suburbans were almost identical... I know there is a generation gap there (60-66/67-72/73-90) in the Suburban family, but maybe, just maybe!
I wonder if the chassis profile and body mounting stayed fairly similar... as well as the wheelbase. if not, I am good with a welder, cutting tools, and scrap metal! Just want to know how feasible this would be.... Would like to keep all running gear from the 89, not sure how inferior the 64 front suspension would be to the 89, but I definitely would want the newer front disc brakes, and probably rear drums. For something that I would still use for towing and hauling 4X8 sheets of plywood and drywall, or engines, etc., I would want the rear suspension to be really heavy duty, and I would think the 9 leaf 3/4 ton setup would be much more stout than the coil spring setup, but again, most of my knowledge is geared towards everything Camaro/Firebird related...

Seems like the frame on the 73-90 burbs jumps up a little higher in the back, and a little closer to the axle is where it jumps up, so I would envision having to raise the body 2-3" off the middle of the frame to get it to mount to the rear. Then the gas tank is in a different spot most likely, as far as the filler neck. Have to use the older one.

Now if this turns out to be a 4X4 when I go back to look at it, I would probably want to stick with the stock chassis, but I am thinking it's probably a 2wd. it was sitting fairly high though, who knows. I was in too much of a hurry to cut out a trunk pan, cowl (under windshield section of metal) section for my suburban, pull a windshield for it, and some leaf springs, that I had very little time to drool over this plum/purple colored carryall...
Anyhow, like to hear advice on either approach. discs on the front of the 60-66, and rear suspension opinions, and then also opinions on the whole body swap on my 89 chassis.

Thanks,

Chuck