For the SRT:
Red Top:
34, or 34/78
Tellow Top:
D34, or D34/D78
Only difference is that 34/78's have top and side posts, 34 is only top. Both will work fine in SRT's, very few places carry the regular 34 series.
NOTE: Battery Temp Sensor needs to be modified to use any optima batteries. Simply pull out sensor, pull off "spring clip", Slide an O-ring onto it that fits it snugly thats about 1/8" thick. Take the spring clip, and break/cut the two little progs off the inside. pop the spring clip back on on top of the O-Ring, and push the sensor back in. Let the sensor "clips" hold it in place while you insert new battery, then reach through the bumper and give the sensor wire a yank- it will pop out of the hole and push against the side of the battery, further then it did before.