i have a '93 civic hatchback with a ls motor, i want to do a ls vtec, with a gsr head. thing is, i'm not sure what model dc sport header to buy. which model would best fit this conversion, ls or gsr header? also which pistons should i use, ctr or itr? would i have to use some sleeves on my block, or is it not necessary? could i use ls aem pulley kit for this conversion or does it have to be gsr? and if i do decide to go ls vtec turbo, could i use a greddy ls turbo kit or a gsr turbo kit? i don't know much about turbo, so i don't know if it would work in my civic. i would like any suggestions out there. thanks.