O.d.

IF it will handle a bigblock,then I will. I'm planning on driving this thing alot 6-8 months a year. I want to use it or its a waste of time to me. That also means if I want to do a 2000 mile road trip,it needs to,,, and not at 60mph. The mopar overdrive,which I've never used and no nothing about seems like a less expensive route. 30 years ago,when I had my 68 cuda,70 cuda,71 cuda,68,69,70,and 73 Chargers. I was building mopars using the Direct Connection books alot. All 383's and 440's. back then the mopar overdrive was somethig you avoided.... Gas was much cheaper too,,,as were the cars. I kick myself repeatedly. Now I gotta find parts. So to understand, I can abuse ,,,sometimes,,1st,2nd @ 3rd,but don't slam od,just cruise with it.,,?