Heres my 2 cents and why.
If you are going KA-t build it right. Using cheap and affordable Altima/Xterra/frontier KA pistons drops the compression to 9.2:1, and these ringlands are thicker than the 240sx piston ring lands. This means higher boosting and more power, without the worry of frying rings.
You also live in cali, KA's are abundant at wrecking yards with parts (ecu's, heads, etc) gallore.
After market support is becoming better for the KA.
Hell obviously you were SR, now maybe it's time to get some low end torque youve never felt before. Torque band on the KA is much smoother and linear, thatsa great thing since you just have to shift a tad earlier than the SR.
Might as well let the V8 guy's feel your 2.4litre turbo charged WRATH....
Just my 2 cents....
__________________
|