the stock frame is narrower than the s10 frame so u'll have to fab up some new bodymounts, but the stock s10 ones may line up close enuff to use on ur project, check the website http://www.usbody.com/Pages_Info/F-Installations.htm they do a mock up on a pick up
last but not least read through So-What's post on Hamb http://www.jalopyjournal.com/ubbthre...5&o=&fpart=all he has done a few himself

the swap that i'm doing is not for the faint at heart. 1st i stretched the frame 37inches, cut the front frame horns off to about the steering box & added about 12inches on the rear of the frame. i am making my own floor/firewall since i will be lowwering the body over the frame and w/running a 425/400 Caddy combo the needed to be replaced so i will ove it back about 3-4inches. will be using either 1x1 or 1x 1 1/2 tubing for the frame work of the floor & lay sheet metal over all of it