well call me stupid but when i asked the lady that i bought this from she told me it was awd, come to find out its 2wd(lucky me,lol) please help me figure out exactly what will work as far as like 94-?camry, sienna van,highlander,etc?

It is difficult to compare it with a camry but more like a highlander fwd.
Below is worth checking from your VIN number, it gives you info on what you purchased.

A quick VIN decode for the RX300:

First 3 digits: Country of manufacture / company / plant code
JT6 or JTJ = Toyota, made in Japan

Digits 4 - 8: Model and Powertrain Options
????? = RX300, 2WD (don't know! I'm guessing it's GF10U, if the pattern is like the 330)
HF10U = RX300, AWD

Digit 9: Check digit - computed based on all other digits

Digit 10: Model Year
X = 1999
Y = 2000
1 = 2001
2 = 2002
3 = 2003

Its a 1MZ engine.

I wouldn't go as far back as 94 for a motor, but look at the V6 camry's & Lexus ES300's from 98+ The closer to the build date [1999] the better as it will virtually eliminate any room for error in terms minor changes in the engine from year to year [ie. sensor relocation, etc] - not that there should be any.

No you cant go too far back or you wont get the VVTi valve train....

^^ + 1 million.

so if i can't go that far back, what will work....some say the rx has a block all by itself and no other vehicle engine will work? i was hoping to find someone on here that has done it before and could tell me from experience

gotta pic of the inside of a engine i'm trying to buy, would like you guys to look at it and tell me what you think...i can't get it to download...send me a email so i can forward it to you

I PM'ed you my email...