Quick recap...77 CJ5, transplanted 304 with T176 & Dana 300. Engine cuts out when accelerating, this started mainly happening after I was able to get it out of 2Low and into regular 2wd. Engine for the most part ran strong in 2Low. It doesn't smoke bad, maybe a little white/blue on first crank up, cranks/turns over like it should, rumbles and pops but nothing major. I took it to a Mechanic said that it was a faulty carburetor, replaced it and now he said saying that the motor needs to be rebuilt. He says there is so much slack in the timing chain and cam to distributor gear that it will never run right. I am bummed out, I don't have the cash right now to do anything and I am not sure I can get out of what I have into it. I am going to pick it up and take it to another mechanic for a second opinion. What do you guys think? If I do have to rebuild, should i stay with the 304 or I've read that the 360 is a better option?