SNK_P!T

Ok that's my question : i need some idea for a good performance i think the best is ; use my present part too build a good engine right? so a got 2 B18A1 with standard transmission . the first one it's a B18A1 in a GS integra and the second one it's a B18A1 in a LS integra . With my GS a got cup off at 7400RPM and my LS 6800RPM WTF!!! well ever i have a friend with a ITR is got a N/A and f**k, that a beast so a want to go fast with a B18A1 not a B18C5 . So help me to find a good inside part too put in for incrase my compression and torque!! thx
P.S. this 2 motor run perfectly good !!