Backhalving?
I'll throw my 2 cents in here. I have had a few race cars A 440 scamp that did 6.30 1/8 and Sg 67 Cuda 5.80-5.90 1/8 that was a full frame car with a Ladder bar rear set up. I can say that the ladder bar set up left hard and straight every time. I would 1.24 60 ft. The Scamp was a bit more to drive and not as forgiving on fair to poor tracks. It would 60 ft 1.40 range. I have learned though trail and error that you can never have to much chassis. I'm building a 68 NSS car and am only allowed to back half or I would full frame it. Yes I agree a back half will cost more up front money, but if your heading toward going faster, (and who wants to go slower) in the future, Do it right the first time. It really depends on what your plans are now and down the road. Only you can answer this question.