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Can I swap these out, or would I have to buy an SVT header for it to totally fit correctly?
I want to go to 65mm TB
I want to go to 65mm TB
The header has nothing to do with the TB. You would have to get a SVT intake manifold for the SVT TB, and them I dont even think the SVT intake will fit onto a SPI head.
As far as I know, but I could be completely wrong.
Moved to SPI performance.
Free - look at the info. here:http://www.focusfanatics.com/forum/showthread.php?t=322445
Includes a link to an alternative throttle body for the SPI.
That & the other stickie in here might help you out with options.
Honestly I'm glad the SPI has it's followers. Having built about 4 different oddball chassis cars and fabbing everything myself I respect that.
To give some insight I have the following on My SPI
Mustang TB
Custom coil on plug setup using Audi coils
Cat delete with 2.5" exhaust
Intake setup
My own short shifter
It's fun to drive I just won't sink anymore into the spi.