What size motor does your parts guy have, who ported it and what type of porting?
Redline 4mil Play Port is exactly what I'm going to build.
However, a 4mil 64mm bore motor is 373cc, is this what you mean by 370, or are you talking long rod stock stroke 66mm bore 370?
According to Jay, guy Dave bought the Serval from, jetted his motor fat because he likes to night ride Glamis.
Temps can swing as much as 40*-50* in Glamis between day and night, and I'm sure it's more drastic in the summer months.
So, if you night ride a lot and you don't want to worry about running the bike lean at night, then you end up being jetted fat during the day.
This may have been a big reason why Jay was experiencing poor fuel econ.
I'm going to build a Redline 4mil Dune Port with all of my current mods.
If my riding buddy decides to go with SLP's, I'm gonna have to throw them on and find out how T5's and SLP's compare.
And if dave5.0 sells his PC's for a decent price, I may look into those too.