well i was like u confused.but now i'm clear due to ALOTTTT of research for one the for reliability and access to pts is de sr & rb 1 the srfwd 140 srrwd 150-160HP vs rb 135HP 2the sr has about 2-5 lbft of torque more the rb 3the sr is 100 lb lighter than de rb so 4the sr is full aluminum vs pt alu ...
I AM PUTTING AN SR20DE(LACK OF $$$) RWD FROM AN PS13 SILVIA(STOCK) INTO A 1982 MAZDA 929 I RECENTLY PURCHASE A PULSAR GTIR INTAKE MANIFOLD A 4 THROTTLE SYSTEM WITH 444CC INJECTORS & I AM PUTTIN EXTRATORS Q1.HOW MUCH HP & TQ I MIGHT GAIN Q2 WHAT OTHER THINGS I COULD DO & GAIN HP & TQ WITH A LOW BUDGE...