I have a nms touring car spec head with a paid of 15's, a t4, and hart plenum.

I wondered about the tb as I need to pull the intercooler off it to get one of the spouts tweaked, so thought of replacing both with 75mm spouts and doing the throtle
Body at the same time. Mental power on the original throttle body fella. That must have been running some boost to make that, a little more than my t4 could muster I reckon!

Appreciate your comments fellas.

Thanks

Weeksy