Dont use the 1 inch spacer with a stock intake it will hurt your performance. I had the same question a while ago because i bought the motorsport valve covers and i was going to go with a 1 inch but everyone here on this board told me to go with the 3/8 one so i did.
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88 Stang
306 ci.
GT Mustang heads- ported and polished/milled---Soon to be AFR 185cc
1.7 crane roller rockers/extra hardened pushrods
FRPP X-303 Cam
Stock Intake-1 inch intake spacer
BBK Cold Air Induction
Stock Injectors--going to 24 pounders
BBK Full Length Headers
Mac 2.5 inch Cat-Back
8 Point Cage
Sub Frame Connectors
World Class T-5
Steeda Shift Cable,Quadrant,Firewall adjuster
King Cobra Clutch
Pro 5.0 Shifter
Alunimum Driveshaft/ Drive shaft loop
Kenny Brown suspension
3.55 gears
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