Can Bit Char-A be modify like Bit Char-G?

[Racemonster505]

i found a place in the mall next to the Evil Radio Shack they had those Evil ZZ for $19.99(US) but the other place had Bit Char-A for $19.99(US) but can you do mods the Bit A like you can Bit G is the Bit char-A even worth buying? i like the bits better im getting the toyota supera but this is for my 7 yr old daughter so i dont want to spend alot of money. she interested but not full into it like me yet. but i was just wondering if it can be modded? has anyone seen the barriers for those Evil ZZ they only cost $10.99(us) and it looks like the are alot of configs for tracks im thinking of picking up a box or if anyone can send me a link to buy the bit track barriers Look how Evil Zip Zaps arehttp://www.radioshack.com/category.asp?catalog%5Fname=CTLG&category%5Fname=C TLG%5F009%5F019%5F000%5F000&Page=1 (runs around screamming "EEEEEEEVIL") too much sponge bob