yeah stock block and head. only problem is we're having issues with the wastegate.... i mean externals are supposed to be more accurate at holding boost and this one kept spiking to 13. so we have to change out the spring to a 8 psi one and we're pretty sure it will raise the boost to around 10 or 11 anyways. he's pretty happy with the numbers but after every run the #'s would go up... it went from 240, 264, 275, 301.... the TQ remained around the same 20 hp... but we didn't want to chance the block. we were pretty sure the next run would be our last if the #'s kept going up like they were and we didn't want to have the problem of spiking to 15 or something and cracking a sleeve. but yeah overall we're pretty happy with'm.

i hope this helps guys