What kind if MPG are you getting? I used to average 26mpg in the Impala SS. Of course it was a different shape, but I used to drive it at 80+

If you are really looking for MPG I guess the sprinter engine would be OK, although a six speed and the LT1 might do the trick.
Check out this web site
http://www.bigfastcar.com/


http://chevyhighperformance.automotive.com/10476/48479-chevy-impala-ss-wagon-six-speed-swap/index.html

__________________
"I have no convictions ... I blow with the wind, and the prevailing wind happens to be from Vichy"

Current
Monika '74 450 SL
BrownHilda '79 280SL
FoxyCleopatra '99 Chevy Suburban
Scarlett 2014 Jeep Cherokee
Krystal 2004 Volvo S60
Gone
'74 Jeep CJ5
'97 Jeep ZJ Laredo
Rudolf ‘86 300SDL
Bruno '81 300SD
Fritzi '84 BMW
'92 Subaru
'96 Impala SS
'71 Buick GS conv
'67 GTO conv
'63 Corvair conv
'57 Nomad