A Body Radiator Interchangeability

My Dart runs on the hot side with the radiator I got with the puzzle it was when I bought it. Its not a 340 rad and looks to be a two core out of an earlier 318 car. With the stall converter and it being only 20 degrees Celsius it's running around 200 degrees. On one of out hot summer days I'm sure I'll over heat even with the transmission cooler. My question is will a radiator from a 1969 barracuda bolt into a 1969 Dart? I'm looking at this one on ebay but its for a 1969 barracuda.

http://cgi.ebay.com/ebaymotors/ws/e...ageName=ADME:X:RTQ:MOTORS:1123#ht_4679wt_1575

Thanks for any input