Twin Turbo Roller?

and from another thread:



just means you have to be very dedicated to do a successful turbo mod and be willing to make a few mistakes along the way.

sure they will work, but they take a lot more work to make them work.

i'm not sure of the cost comparisons

true. the 340 i had in there was to break in the turbo kit and make sure it was sound...after about 1500 miles, the non boosted built 340 said NO MORE! after the 416 went in i had no problems. i just put gas in it and drove it!