So you guys are doing the XP VS S1X debate, intense says there S2X & S3X are streetable still with the proper heads. So one of the two builds i was thinking of going with would be

ZZP FS I/C, GEN V 2.8 S/C pulley

then ether

1.) S2X Cam and S3 Heads, 130 springs, Double timing chain

2.) S3X Cam and S3 Heads, 130 springs, Double Timing chain

i think i saw that someone said the S2X/S3X wasnt streetable any explanation why you would think that?