Hi guys, im new to this forum. I bought a cen gen LE a couple months back and finally got it broke in and tuned good. I bought a new pipe for it and i hope its all right to run it. Its winter now and im building this truck for spring and i really dont want to run the pipe if its going to hurt the motor. It said it was for big block motors. Here is a link to the same pipe i bought. http://cgi.ebay.com/TSAIS-TS12CL-EXH...mZ180081486893 Also i want to install the diff lock too i want more power!! What all can you do with the diff lock? lock all four wheels or just the rears? My truck doesnt pull wheelies???? is there something wrong?

Thanx.