Thanks for the reply Al, yes the Y block is not a common motor here but i've had this one hanging around for years just waiting to find a project to put it in, its going in a Willys pickup gasser style.
Yes I know of Mummerts and have bought a few parts from them.
I actually met Ted for the first time last September at the day of the drags in Little River raceway, he was a gentleman and answered lots of questions for me.
I really wanted to know what people would suggest for primary size tube, I would of though 1 5/8" ???
Cheers Steve
http://www.langysrodshop.co.uk/Its good to be different but different ain't always good.