TXblue240Z

I just bought my first Z, a 73 240. Which is great because I have wanted one for years and I finally found one in decent condition that runs, etc. OF course it needs some work... The A/C system needs to be repaired, I think it has been converted/ replaced recently...but I'm not sure THe compressor has a manufacture date of 12/98 and the dryer has a label that says that it is compatable with either r12 or 134a. I can find out any info I need aboyt what was done with it because I am the third owner and the second owner had it for 6 years, only did paint and body work, but had purchased it from his mechanic and I got the name of the shop...SO I'm not worried about the AC system itself as in getting it working, but I am concerned about the blower. The air coming out of the vents is WEAK very WEAK. I had this same problem with my former car (an 81' celica) where i could get ICE cold air but it would not blow very hard so in the Houston summers, it was no good to me anyway. I was wondering if anyone had replaced their blower motor in their Z and if there is one that blows really hard. Aftermarket or from nissan, etc... I won't be working on the car until Dec since I will be away on work for 4 months...I literally got the title the day before I left so I haven't gotten to really enjoy it yet, but I know of several things I need/want to with it when I get back so I am trying locate vendors/parts/brands beforehand. Any help on this and probably other questions i will come up with will be greatly appriciated.