Homebrew FIPK Question

I fabbed myself a FIPK. 3" exaust pipe, braze in two hose nipple and a mounting bracket. Really looks good. Now for the question I was unable to get a 1/2 hose nipple for the crankcase vent tube so I cut it down to 3/8 will it effect engine performance or will it be OK?

Not a problem. Just use a hose clamp to keep the crankcase breather pipe attached to the nipple.