700R4 and 208 in my '69

[Purs]

OK, been reading all that I can find here and seems like everyone thinks that a TH350 and NP205 are the way to go for 1st Gen Blazers (if you want an automatic). However, I was talking to a 67-72 truck guy here and he says if I'm not going to be racing or wheelin' very hard then there's nothing wrong with the 700R4 and NP208 setup.... This rig will see off road action occasionally but it won't be a mud buggy, rock crawling, or anything else extreme.

I'd like to get you experienced guys opinions on this before I go that direction. I already have the front and rear driveshafts for this setup but no crossmember. If I do this, do I need a later model crossmember or my 67-72 crossmember?

I've got a boardmember who has made me a very generous offer of his TH350/NP205 setup but he is a million miles away (almost!) but I'm afraid shipping is going to make this not very cost effective.

thanks for helping me move forward in getting my '69 K5 roadworthy.