marc4x4

I have just got a tidy stage 3 4x4 it is supposed to have a hybrid t3 on it how do you tell? when you take the air intake hose off there is a flat spot machined on the end of the shaft i have been told this means it is a hybrid? Also what turbo is best a t3 hybrid or a standered t34 as mine is a bit smokey not sure to repair or replace and have been offered a t34 cheap also does any one have a t34 hybrid or a mongoose stainless for sale? thanks every one!