CAV, RCR roller, SPF's are very accurate but tend to be pricey. I have had both the CAV MK1 and the SPF MK11. I would advise at least 400 hp minimum. Look at JCOOPS CAV on GT40s.com, if it is still for sale it is a nice car.
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SPF Daytona coupe 055, Roush 427R
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