couple of swap questions.. any help ?

[travlinman]

ive got a 68 burb ive started working on, its missing the 2nd row seat and was thinking about putting a 3rd row in.
went to 1 of the local pick yards today and found several mid-late 80's suburbans there all complete so questions are...

1. will the 80/20 back seat fit ? they are the ones the have brackets on the bottom and side for them to flip foward and lay flat.
2. would the 3rd row work ?
3. also these burbs had the roof rack.. would/could it fit with no or minor mods or not at all ?

they wanted 40 for the rack and 45-50 for ea seat
should i ? what would be involved in making them fit ?
any info u guys would have would be greatly helpfull.
thanks