Anybody put an aftermarket battery in their Miata?

[mazdaddy]

And how did you handle adapting the venting of the new battery??

[R2s99zoom]

interstate megatron... comes with the proper vent tubing... its a direct replacement

[Nutari]

Got an optima redtop in there. Fits fine, just had to modify the tie-down bracket.

[lilpoindexter]

Westco...everything fits like its supposed to...I never drive the car, so the battery doesn't hold its charge anymore after like 6 or 7 years or something, so i think it was a good battery.

[mx5_!an]

I bought a a cheap vatozone battery and it works great, came with the venting tubes also