Call Arrington ( 1-866-844-1245 )
Tell the sales guy you need 8 .020 and 8 ,030 valve spring spacers for your cam swap.
They will gladly sell them. It costs almost as much to ship them as to purchase, but....still less than $40
I seen that you have the same exhaust system that I've recently purchased, did you have any problems with putting on tips? I bought some tips and they don't seem to fit at all.