Our K-Tuned 90mm Throttle Body Uses that popular bolt pattern from the 86-93 Ford Mustang 5.0L. This allows our throttle body to bolt up perfectly to some of the bigger aftermarket race style intake manifold options. The 90mm K-Series TPS and comes standard with a 4" barb inlet. As with our previous designs, the throttle spring tension can be adjusted to suit the driver. We also have Vanjen (Wiggins Style) inlets available separately in 2 additional sizes.