Hi everyone.

I was just about to pull the trigger on a rear end swap on my 1973 Plymouth Satellite. I have a mild 360 in it right now (318 stock), but I'm planning to either do a 408 stroker kit in it or drop in a 440. I already swapped out the 904 transmission to a 727 with a shift kit. I believe the stock rear end is a 8 1/4. I was going to swap to a 8 3/4 or a Dana 60 but from what I am seeing online, the 8 1/4 can handle up to 500 hp? I need to install a Suregrip either way. For gears I was thinking about 3.23 for the highway, but I just found out about transmission over drive kits. I am thinking a 3.55 rear end with a Gear Vendors might be beautiful. Do any of you have this set up, what are your thoughts? I would like to keep a nice top speed and get out the door fast. Do I really need a rear end swap or should I build the 8 1/4?