If you use a 74 Maverick M/C you can use the existing distribution block. Direct bolt in, very easy swap. I did mine in an afternoon using the Wilwood kit, that slip over the existing spindles. Companies like 
www.greensalescompany.com usually have the M/C's available. Also check here 
http://www.mustangsteve.com/ I picked my M/C up from Steve.
Ron