Optima yellow top battery

[GT_03]

I found a site that sells Optima batteries at very decent prices, but got a prob. I don't know if i should get a Group 51 or Group 51R?? what's the difference??? Whey are the same size, the "R" means reserved. They don't have my car on the site, and there operators are off till next week. Thanks for any help.

[GT_03]

sorry, here is the link http://www.tna-sports.com/index.cfm?...7824&pageid=30

[CPHILHOWER]

1st. Group 51 fits certain Hondas due to small size
2nd. "R" means Reversed post. Same reason above.
Chris

[GT_03]

Well, i need a small one. My OEM battery isa only 330CCA. It's the size of a quad battery. GM has now corrected this problem with the 04 Vibes and put a bigger battery in them, but if you got a 03 your stuck. The size of the 51 and 51R is the exact same size as the Diehard one needed in my car so i know it will fit. So what does is the Reverse post??? Just the opposite sides??? Thanks alot