That is the same article which I quoted from and "linked" in my post above.
I read the only difference between the 302 & the 302R as being the tune and the pollution controls (cat's & sensors). The article clearly states that the first 5 Boss program engines were the ones in the cars at Daytona last January. It does not differentiate in any way between street and track. They used the 302R cars as test mules for this engine program.
You can also buy this engine straight from FRPP (with or without the ECM & harness) for around $7k.
Actually that makes sense. Why would ford spend money on r and d with two different internal variations of the 302? Do it once with one budget only!
The boss engine available for frpp is the stock 302 or the boss 302? Are they both available for retail sale?