which size pulley to use??

[bollpie20]

as i have been sitting and waiting for the new long block to get done, i have been thinking about upgrading my P1SC to the D1...i have ordered a 2.8 pulley to spin the P1 which would prolly put some pretty decent flow down. my question is if i do infact upgrade my blower to the D1, will that 2.8 pulley be too much for my motor? (the set up i will have is in the signature) if it will be too much what would you guys recommend? thanks a lot!