i SERIOUSLY don't think it will fit. i'm not a truck guy, but the Fronteir has like a 6 and you wanna replace it w/ an eight?
replace this....
http://basicauto.i-c.net/01frontierblack%20011.jpg
with this....
http://i2.ebayimg.com/02/a/01/7b/89/29_4.JPG
again, not a truck guy, but its not looking good there
