my build is:

vortech v3 3.12 pulley
Momentum headers, test pipes, hks high flow cat back
kinetix velocity intake
uprev osiris tuner , uprev maf
walbro fuel pump
Tim wolf lighter flywheel and z1 lighter crank pulley.

I purchased dw440 injectors used from someone on this sight but everything else is new so in thinking maybe buying new injectors also,possibly rc600 injectors. any recomendations?

 

You should be fine with those 440's. I use DW600cc injectors myself and have a similar setup to yours.

 

thanks