I'm learning a boatload of knowledge from this thread. I'm building a 408 with Trick Flow heads, and a big cam. I have an spare complete rear axle assembly to replace my stock 1970 8 3/4 rear. I'm keeping my 741 8 3/4, but modified with an Auburn sure grip. I know my stock 741 83/4 needs improvement, including rear disc brakes.. Help me spend my money for maximum value for putting my 408 to the asphalt. I have a Pat Blaise 727A torque flite, and am shopping for parts that will get it to hook. A kind member here showed me a 15' SBP wheel, which I've ordered. I'm not tubbing the car, as it's a numbers matching 70 Swinger 340 with the build sheet. I want to be able to run her hard, yet still put my original parts on her and get stupid money at Barret-Jackson when my kids sell it after I expire. I'm looking at ss springs and Caltracs. All opinions are welcome. Paul.