gear help

[V8MUSCLE]

so, i was thinking about putting 4.10's in the rear but don't want to loose what fuel economy i have. has anyone seen or heard of a replacement 6th gear that would reduce the ratio so that the overall gear ratio was the same before the swap as after when in 6th gear.

i need new syncros for 3/4 so if im going in the tranny i might as well have them throw the new 5/6th gears in.

[Knight]

I put 4.10s in mine and really didn't lose any mpg. By 6th, at 65 mph - if I remember correctly I'm at maybe 2100 rpm or so. I'm not sure if other 6th gear ratios are available for the t-56 or not.