If I were you, I would take the $300 and switch it over to r-134a. I don't care what other people say about it not being as cold because it is, it just takes a minute or two longer to get as cold. What you will need is a complete seal kit, the fittings, a vacuum pump, a flush gun w/flush or a can of flush, the right wrenches, a set of gauges, PAG 46 oil (only if you are planning to reuse the old compressor and if you are, you want to completely drain out the old oil in it!) A NEW DRIER, maybe a new compressor, DUPONT R-134a WITH DIE (One can with die and one without but both should be the Dupont Suva!) and some time. I highly doubt you have any evaporator or condenser problems because the only time they go bad is when they leak, ! Anyways, like I said, I just recently did mine and replaced both the drier and the comressor (rebuilt compressor) and my shit blows 45 when it's 90 out but like I said, it takes a minute to get there because of the whole chemical makeup of r-134a/suva. This is the site I referred to prior to doing mine, CRX Resource - DIY Cold AC with R-134a on a 1988-1991 Civic/CRX. . It will tell you a whole lot (but it will not tell you how to flush your A/C system!) and if you follow those steps, your shit will be blowing cold in about 5 or 6 hours from the start of the tear-down. Better yet, almost all of the items you need, as far as equipment is concerned, are rentable at your local Autozone. Now, as far as the flush, you just spray it in any line BUT DO NOT SPRAY IT IN THE COMPRESSOR, let it sit, then blow it out with an air compressor and that should clear out any clog and clean the lines! Good luck and remember that if you go through all of this trouble, DO NOT PUT MORE THAN THE RECOMMENDED AMOUNT OF OIL IN THE SYSTEM, PERIOD!!! - Nick