plenum spacer for rev up

[peggers350]

apologies if this has already been covered,

 

which is the best one to go for as im in the market for one.

 

thanks in advance!

[Strudul]

Motordyne 5/16"

[Stan]

Also with a revup most people recommend either a new lower plenum (I think Motordyne make it) or a lower plenum from a DE with a bit of a port/polish. That is the cheaper option ðŸ˜

 

I read a plenum spacer on the revup doesn't really do much like it does on a DE