engine pulleys ?, need input

[85cutlass6.6]

i bought engine brackets from a 1968 350 from a guy on the site, intending to use only the alternator and power steering brackets, the setup looks like it will be alot like the setup on my 307 but without ac, the question is, which engine pulleys should i be looking for to put on the engine with these pulleys? and how many grooves
heres a pic of the brackets viewtopic.php?f=32&t=37938 they will be going on a 403

 

[L92 OLDS]

I have a set of pulleys from a 1968 olds 350 from a Cutlass if you need them. They have been sandblasted and painted semi gloss black.

 

[85cutlass6.6]

Pm sent