Does anyone know when building a book chassis for use with sierra uprights, if any kit manufacturers wishbones will fit the book chassis and give a wide sierra track using the standard pickup points?

I do know that MNR can supply these, i just wondered if there any others.

Cheers

Luego Velocity XT front wishbones give a wider track to suit the Sierra rear IRS. Check with Luego - quick, they are closing for holidays on 4th October - see their website for details and prices.