1) https://www.enjukuracing.com/product...hoC1eQQAvD_BwE
i wanna buy the angle kit i was wondering if i still need inner tie rods with this kit or not?
says "There are 4 tie rod rods included with the kit" so i just wanted to make sure if i need anything else with this kit

2) can i install a hydro with one brake caliper? or i have to install a duel caliper for that

 

#1 Yes you still need the inner tie rods. The 4 "tie rods" included are rods (tie rod extenders) for your inner tie rods 2 different sizes to suit your setup. You can use your OEM inner tie rods.

#2 1 caliper as in inline/pass through? yes you can. suggested dual caliper setup for more predictability. but inline will lock up the rears just fine.