Has the Delta 88 always shared theplatform with the Bonne? (i.e. H Body) In particular, back in 78.

Just wondering, because if so, the Bonne will be my thid car in this family. 78 Delta 88 LS, 95 LeSabre, and my 98 SE...

Nobody, huh?

Well, I will just assume I'm right. So there!! :P

You are mostly correct. However, there were a couple of dark years where the Bonneville was built off of the Lemans G Body Chassis (1982 thru 1984, I think). It was called the Bonneville Model G. Also remember that the Chassis' have changed over the years.
This may help

http://www.classicbuicks.com/body_st...0Style%20Chart

SWEET!!! Great link! Thanks Ol'Timer. They were both B Bodies. Now, I just have to find and scan the pic I have of the old Oldsmoboat....