Anytime you want to throw a Skyline front on an S-Chassis, you better have wide body in mind. R33 on an S13 is an absolute no-no. If you insist on doing this, R32 front is the best fit for an S13 coupe. Do not do this to a hatch.
R33 front applies to the S14, but again wide body with the proper kit is a must.
__________________
|