Are there any parts that interchange between the 740 and other Volvos. I own a 740 but it's kinda rough around the edges.

 

It would be better to post what parts you are looking for and maybe you'll get someone who knows.

 

Taillights, front fenders and are there any other style headlights that will fit it.

 

740's underwent a couple changes/facelifts. the 1991/1992 740's front ends are virtually identical to the 940's BUT most US model 940's have the fancier headlights with integrated fog lamps, while those late 740's had simple headlights. the different headlights mean different grills, hoods, and the trim piece under the headlight are all different. earlier 740s had dual rectangulars, this setup is pretty much unique. then there's the 1990 740 which was a transition year, superficially looks like the later, but none of those body parts interchange.

tail lights on sedans also vary by year, while the tail lights on wagons are more consistent across the years and between 740 and 940 wagons.