Welcome in Shaun
These early R1s are great , here's a bit of info to help you along
"Those 5jj's are a lovely bike , they share a lot of parts with the 4xv like frame, wheels & engines are similar , things that are different are ECU , bodywork i.e. tank , fairing , seat unit & headlight also the radiator & wiring looms are different .
Make sure you look in the 4xv & 5jj sections .
Check the main 20pin white plug on the wiring loom that sits behind the left hand fairing to make sure its in good order & been greased as these can cause problems , the HT leads can break up when old where the plug cap screws on & cause misfire all you need to do is cut 5-10 mm off the end & screw the cap back on , also DON'T tighten the sump bolt up to 42nm its a lot less more like 15-20nm .
get the service manuals and parts micro fiches for both the 4xv & 5jj downloaded , use the online PDF link & down load the parts manuals from there .
http://www.partzilla.com" onclick="window.open(this.href);return false; can be helpful for online parts micro fiches for getting part numbers & checking prices in the states you can then enter the partnumber into O.E.M part search on places like
http://www.wemoto.com" onclick="window.open(this.href);return false;
enjoy

"