what spacer fits?

[chesspirate]

Looking to add a throttle body spacer to my rig.
1991 4.3L TBI, California.

I already have a K&N FIPK, basically a pan with a filter.

For those of you that have this, how much space is left under the hood? I've had a hard time getting a measurment, and do any of you have a throttle body spacer installed?

[Maxx]

Powerdyne I heard by other members that it was effective.

[XxInFaxX]

powerdyne is only a 1" spacer. you should be fine. i have one on my truck. check my cardomain for pics.