I think you are at the point where making more power mods from a 22-r no longer produce the kind of gains that you can feel. The kind of additional you want would likely cost more than it's worth and an engine swap begins to be the best way to get more power. Remember that a 3-RZ, 5-VZ, 2-JZ, 1-KZ and 1-UZ each of these new generation "Z" motors make way more power and will all net you equal or better fuel economy. The process of installing one of these motors can be complicated and expensive but it will net you the kind of factory reliability that toyota built into them. If I were to advise you I would say drive the motor that you have built. Don't get to caught up in trying to get more power out of it. I would guess that as it is you have a carefully built motor that will give you enough power for what you need to have fun with it. I have seen too many times where people get caught up in the chase for more performance and they end up with a high dollar project that sits in pieces in the garage and when their friends go out wheeling they can't because their junk is in pieces.
just for shits and giggles I'm about to drop in that 85 22R i got through a friend of a friend BUT I am putting the header on it, my old intake and weber and my 1200 Marlin clutch. That way I can very plainly see how much power the old motor had.
Heli, you know BigMike installed that 3rz in his 80 and it made 150 hp as it should BUT it still got like 16-17 mpg. Thats the mileage my old 060 22R made.