What tools and abilities do you have? The easiest and requiring the fewest tools is a dropped axle, Toyota p/s box, and a firewall mounted brake booster. Probably next is mount on an S10 chassis, and finally a frame clip. The FIRST thing is to drive it and find out if you really like the old truck experience. You will have much air noise, water leaks, exhaust and engine smell in the cab, body roll in the corners and many other little quirks that I love. The 40 in the picture has all of the above but is a ball to cruise in.
http://s32.photobucket.com/user/coilover/media/StudeJustins40CougarCat004-1.jpg.html

Evan