Is there any difference the body of the car in the long run? Effect speed at all? Doubt it, just saying if there's anything like that let me know

 

Sunroof = less headroom/helmet room and more weight up at the top of the vehicle.
both reasons are not a big deal to some, and a much bigger deal to others.

 

The actual body/frame are the same. The sunroof is essentially a retro-fit. I gather some where even added after the car was imported to the USA.

 

Hurts the lines of the car IMO, and also as mentioned cuts into headroom.

Otherwise there's no measurable performance difference worth mentioning.

 

There's the thought that without the overall the frame is more rigid and the center of gravity is lowered, both good for racing, but I'm sure it's a very small difference. I do, however, keep my eyes open for one without because I need more headroom in the FC and there aren't many ways to get it.

 

plus or minus 40lbs at the highest point of the car

 

It's been weighed in at around 25 lbs for the whole assembly. There's no difference in chassis rigidity because all of the chassis are the same.

 

on a bathroom scale? ive got the main bracket or assembly,whatever you call it,its def. more than that,OP should be more worried about fat people riding along anyways,sunroofs are awesome in mild weather,lots of fresh air without freezing you or making it excessively hot

 

See here:

https://www.rx7club.com/race-car-tec...-978801/page4/

 

Late, but thanks everyone.