I used these on my twin turbo LT1. Decent but MLS is far superior. (I would never use the felpros again)


I ended up with some leakage (combustion gases not coolant) after a standing mile run at the 900hp level. Would not be an issue with MLS


69 Charger. 438ci Gen2 hemi. Flex fuel. Holley HP efi. 650rwhp @7250 510rwtq @5700