Custom Frame (Long)
I am considering embarking on an unusual project. I have a 1970 Mercedes 280SL that I picked up for a good price this spring. It runs well and is in decent shape. (Needs bodywork, paint, etc) With the price of parts so incredibly high, I am considering fabricating a frame or modifying a frame to fit so that I can install a Chevy 350 driveline with a GM rearend. It is a unibody and has an area where the rockers are that frame rails would fit, similar to channeling. I can probably get $3-$6k for the entire driveline and probably another $2k for the items that would be removed from the engine compartment, wheels, spindles, etc. My initial thought is to purchase an aftermarket front & rear suspension from an outfit like Fatman, and fab the supports(frame) to attach the front and rear suspension in the proper location. To fab the support area would basically be a square that would mount in the rocker panels across the firewall, and just in front of where the rear suspension would attach. Another option I thought of would be to find a junkyard frame with similar dimensions and adjust it to fit since the geometry would be preset and I could weld up additional pieces before cutting an existing frame. (ie: use the frame as a template, weld the front and rear suspensions to it after it had been modified to fit under the body.) If any of you that have fabbed custom frames and/or installed aftermarket front/rear suspensions have any advice or direction, it would be greatly appreciated!