i run all isspro. i got the 40 psi manifold boost gauge. i like that cause the 60psi, i think is overkill, cause i probly wont get over 40psi. and with the lower max, i can acutally see the gauge move. ive hit 21psi so far, and its nice to see the needle just over center.
egt, i got the rainbow one, 1500*, pre-turbo.