hey guys, I know there are some folks out there that can help explain the differences between converters. I am getting close to buying a converter but I cant make up my mind, mostly because I dont know much about them.

LFP has a stallion PI 10.5 converter and Chikenears has the 11.25 rated for up to 750 hp. What is the difference between the two sizes (besides the obvious) and which is better for a 600 hp weekend warrior?

Do these converters require a retune to function properly? I dont mind the cost, I just want the best converter with the stall at 2500. I want it to lock and hold......Thanks in advance