To say a 33 isnt much newer can be misleading. They can be as little as a year or 2 newer or up to 7/8 years newer and that is a friggin lot. How anyone can say the 32 has a better interior than the 33 is beyond me. The 32 looks very dated from the interior perspective.
You can mod the hell out of the 32 and make it bomb proof but that wont fix the age and condition of the rest of the car. Nuts and bolts rusted on is but one of the issues I have seen in the few 32's I,ve had anything to do with along with all the other bits that time and thrashing take their toll on like bent seams and crushed chassis rails etc.
Finding one that hasnt had a hammerring is no easy task and getting harder as the price drops and allows them to fall in to the hands of those with enough folding to buy one but not enough to maintain it to the standard that a car of this calibre deserves.
Performance wise the 33 does have improvements over the 32. I just pulled all the extra chassis braces from a 33 gtr to fit to my gtst, the 32 has none of this. They are only little things on their own but collectively add up to a better performing car all round.
Looks are a personal thing. You like the 32 shape then good for you, Likewise the 33 or 34. My preference is the timeless classic coupe shape of the 33. The 32 is unique in the looks department but wont age as well IMO as the 33.