Lighter rollers are big improvement on the older burgers 10%lighter dr pulleys would be way to go if you just want to experiment take 2 originals out and try that.Also Id try and get one with aftermarket stainless exhaust or budget for one as manifolds and exhaust can rot .With the rear wheel if its had recent tyre change and mot should be ok.Problem is when splines not lubed and you get corrosion that makes rear wheel hard to get off also when corrision gets too bad you can get play in rear wheel so worth testing that.Julian

If you go for it and decide you'd like a as new chrome back-rack , I have one sat in my garage.