I've been asked what my spline diameter is for a BOSS kit, where do i go to measure this?

heres the product if your interested, no I didn't get it because it says RALLIART, I actually need a new steering wheel because my current one is illegal, due to wear and tear

350mm Steering Wheel (http://cgi.ebay.com.au/ws/eBayISAPI.dll?ViewItem&item=390180036153&ssPageName=ADME:X:AAQ:AU:1123)

You shouldn't need that information. The Boss kit for a TR magna should be the same no matter what. What company are you dealing with?

just edited OP with more details

as tuff said a TR boss kit will always be the same

Super cheap will have BOSS kits maybe not off the shelf but can order them in. PS That ebay wheel will be NASTY. The SASS ones are actually a much better build.

if you want a nice wheel that's legal put a ralliart MOMO wheel in :)

BOSS Kits with the wheel are only $20 though.

Yeah I'm not expecting much, its one of my birthday presents from my parents.

I told him that all TRs should be the same and he told me which kit was suitable...