>The math comes to 2980rpm
I buy the ODs at swap meets for ~$50 to $150, and my record for taking one down is 17 minutes. And that includes dropping the dual 3" TTIs, the stick, and the GVod.
IDK man; I have had both cars, and I wouldn't say that the Duster/360 is much lighter than the Volare/225; both with 4-speeds, both similarly optioned. I mean yur looking at less than 10% difference; probably less than 5%.