Owned/operated by the same outfit that hosts this board:
I strongly recommend the chain driven 600 or 750 models, the shaft driven models are heavier and slower...and while I didn't find any advantages to it, many folks like to alter their final gearing ratios (much like they do here with their Rebels) and that's just not cheap or feasible with a shaft. Alas if FI is high on your priority list, then you'll be stuck with a shaft as the chain driven models were carbureted (unless you find a 750RS, that was the only FI/chain model made but it has a tiny tank that won't get you past city limits).
Note the modern 750 (re: 99+) was an enlarged clone of the 600 motor, same design at a slightly larger scale (it even shares some internal parts). As of this model year, it has just made the same 20 year production run that the 600 enjoyed.
P.S. I don't have that chain guard, it went with the bike...I found a pic from when my friend had it and it still had the guard in said pic.
That hardly even looks like a Rebel. I'm still investigating the possibility of repairing my Rebel, Jack, of Jack's Rebel warehouse says he has a good head, that he can sell me for $250 freight included. So now I just have to figure out all the other parts, gaskets and misc, items needed to complete the head swap.
It will also need a new exhaust for at least the left side, due to vibration the pipe cracked and fell off at the crossover pipe.
I just did the math, if I put it in the shop to do the work and rent a car to drive around for a week, it would be over $1500, not worth it. Here is my price estimate break down:
good cylinder head: $250
misc. part from babbits $130
rental car (5 days, $35/day plus ins)$275
left side exhaust (eBay) $100
shop labor fee (8 hours) $800
Only paid $800 for the bike, and it's not pretty, and this doesn't even resolve all the issues.