Only be a problem if you had put a V8 in it.
Power difference is only around 7.5 to 15 Kw.
Make sure you put the old black air filter housing and all the emission stuff on,make sure no oil leaks and everything works and i can't see any prob's.
Can always give it a degrease for minor weeping.
Over the years have taken a few cars over the pits and major mods can be a headache.
Looking at your car on the NET,it looks good.
I have at times borrowed standard wheels from a mate,just to get it passed. Food for thought,if you need it.
Good luck
Jon