I just installed the SPT heat shield with my cut oem heat shield under it with a Cobb DP. You will not like getting the tranny dipstick and it will sit very close with Perrin TMIC. Other then that its a nice looking piece. Install took about 20 mins and I could only use the 2 bolts and spacers out of the three it came with since I'm using a Cobb DP. One of the mounting hole is on a bracket that was removed with the OEM dp.