Therein lies one of the obstacles i mentioned above, obviously everything revolves around track conditions. I ran 2 cycles (on the left side) and we ran both, depending on conditions. Sometimes started on treads and switched to slicks at some point in the show, or ran either all night as the track dictated. Then you have the element of tire size selection. Back then on both treads and slicks, we ran an 800 on the right rear, 710 on the left, and anywhere from 450’s on both fronts to maybe a 600 on the right front. I have no experience on how the kart reacts to slicks of today’s norm, 800’s right and 600, 450 left. I will say this, if conditions are in favor of treads, I wouldn’t run an 800 on the right front and stay closer to above mentioned sizes with maybe a 600 on the left rear.
Some questions that come to mind for me would be, what caster blocks came with kart, are they what you need, where are you going to find more if they’re not, did the rear torsion bar come with the kart, getting the in/out spacing of the spindle setup up front is essential. Then, worst case scenario, say you get it the best it can be, will it be enough to be competitive against todays technology. I’m not trying to be condescending; however, keep in mind these are just a few of the unknowns that you’ll need to work out trying to adapt old technology to current conditions. Then again, best case scenario, your track may be suited for this kart. In the right conditions and in its original design, there is no reason this kart can’t still perform.