It is not a huge battery so the weight is lower than most but that is still a lot of weight in the front of a heavily front biased car.
I removed the complete back seat, spare tire, cargo cover, seat belts, jack, etc...125.4 lbs, carefully weighed.
I also weighed the stock cargo floor panel, 7 lbs, total of all these is 132.4lbs!!!
I will be making a cargo bin for the tire well to hold a small sub, maybe the amp but I might put the amp under the front seats as plenty of room and it weighs very little, around 3-4 lbs as have not gotten in the new model yet, doing so will save that much weight in power cable alone to go all the way back.
I will also have an emergency survival kit including an alcohol stove in cold weather, some water, minimalist tool package and tire repair kit.
Considering putting a window washer reservoir in there as well as may use the fog light openings for brake ducts.
Then I will build a new floor and any other panels out of Alumalite and some channel and some angle and adding in a big net to secure an area for the dogs.
I am estimating 40lbs maximum weight added back which I will removed for the track.
Thus:
Even more forward weight bias so a low weight battery is a must as I am also installing a bigger intercooler,
I will leave off the engine cover most likely and remove and bracket, brace, clip, etc....that has no purpose, most cars have plenty of those, some not much but it is all dead weight there to ease manf or changes per model...
I just thought of another idea, if I put an amp under the seat I can put the battery under the other one as have to run a cable to the location anyway. Normally I put the battery all the way in the rear so I will do the load calculation and see what the added cable will weigh, it has to be of thicker gauge the longer it is so the part forward of the seat will also weigh more, dependent on what gauge has to be used just to get to under the front seats that is.
BBK, I am working on an idea to fit one under the 15" wheels I plan to run to save more weight and hopefully get more brake!
For now, 11.75x1.25 rotors may fit.
Wheels and tires, 15x9 is being explored, 225/45/15 Hoosier R6 for track, 31 lbs, that is a huge savings.
293 miles and the car is half apart on my lift to explore and work out the best changes to make it a better car in all ways, fit our needs better, etc......having a blast so far
Rick