I just had a look at my file about my pinto build, i remember back when i was doing mine Craig sent me details of his buid which were very helpfull, my information is that L16 and L24 rods are the same length both133mm, with these you will need a piston with a comp height of 34mm, i used 92mm pistons but im led to believe you can go as far as 94mm but i wouldnt advise that.
The longer rod and shorter comp height piston also helps dwell angles etc etc, dunno but the engine seems to rev nicely. I also made the comp ratio about 11:1 and got some gapless rings too.. It all sounds good dosent it...:) Yet the output is way short of any modern engine, still it is what it s.