Money's easy: it's in the progress save, in GPROG.DAT, singned 32-bit integer at 0x0018.
But I tried modding the tuning on my weapons, and the game crashes as soon as the modded weapon is loaded (either at the start of the game or when you load the workshop, depending on if your current mech has said weapon equipped). Or rather, I've been able to mod the tuning, but I can't exceed the default three total points without the game crashing. I tried getting around this by modding the tuning on the current mech's weapons WITHOUT modding that weapon in the inventory, but then it just defaults to the unmodded weapon upon loading.
Anybody found a way around this yet? Assumimg a patch to include a hash to the save system isn't released (there surprisingly isn't a hash) this would be an extremely easy editor. I've already got two projects so far on the back burner that it isn't even funny, so I won't be taking this on. But I'd love to collaborate with someone else on this one and maybe do a little research. I just don't see a point in modding this (other than money and unlocking vanilla parts) if the most you can do is what's already possible in-game to begin with. Anybody knows a work around for this, let me know.
By the way, tuning is handled in a ridiculously simple way (so simple I had to think a little outside the box to figure it out). Your inventory is also located on GPROG.DAT, and each "tuning" is a 16-bit value, but it's not an integer: if your tuning in-game is 111 then the value will read 1110, if it's 021 then it will read 0210. You can find your tuning by searching your actual tuning values in order followed by the obligatory zero.