I was looking up some info on different radiators for different vehicles and their are some viable options for "almost" 100% bolt in. Can probably make spacers for the bottom vr4 mounts or custom brackets up top.
Stock vr4 radiator dimensions:
Width = 26-5/16"
Height = 14-13/16"
Stock 1g dsm radiator dimensions:
W = 26-5/16"
H = 13-7/8"
Option # 1
Koyo 36mm V-core for 1g dsm (stock fitting all aluminum racing)
W = 660mm (26-5/16")
H = 350mm (14")
Option # 2
Koyo 53mm R-core for 2g dsm
W = 682mm (27.28")
H = 350mm (14")
Option # 3
Koyo 53mm R-core for evo 1-3
W = 654mm (26.16")
H = 375mm (15")
Option # 4
Koyo half size racing radiator for evo 8/ 9
W = 342mm (13.68")
H = 375mm (15")
I know a few guys here have played around with some of these options in the past.
Stock vr4 radiator dimensions:
Width = 26-5/16"
Height = 14-13/16"
Stock 1g dsm radiator dimensions:
W = 26-5/16"
H = 13-7/8"
Option # 1
Koyo 36mm V-core for 1g dsm (stock fitting all aluminum racing)
W = 660mm (26-5/16")
H = 350mm (14")
Option # 2
Koyo 53mm R-core for 2g dsm
W = 682mm (27.28")
H = 350mm (14")
Option # 3
Koyo 53mm R-core for evo 1-3
W = 654mm (26.16")
H = 375mm (15")
Option # 4
Koyo half size racing radiator for evo 8/ 9
W = 342mm (13.68")
H = 375mm (15")
I know a few guys here have played around with some of these options in the past.