allmotor D16 is not the way to go but i went 1250s on 190whp 170trq i got 12 passes on it and it blew up i had more fun and less money in D turbo--- the d that blew up at mainstream was a fully built motor had every thing you could put in it -- it was built by rs machine it has bisi cam-head-header it will be forsale if you are interested i am going to fix the motor and it will go 12s scott tuned he is a very good tuner thanks for all the help