I know I've seen it on these boards before...and yes I have used the search function, but nothing close comes up. What I'm looking for is the company that you ship a portion of your tranny to and they refurbish it with stiffer springs to make it more aggressive while shifting. Any info would be greatly appreciated.

 

Stillen does that.

 

SGPRacing.com

 

+2 stillen

 

+1 on SGP .. i'd take them over stillen... more expensive but you gotta pay for quality