abf turbo

hi all right upgrading my kr engine  to a forged abf unit

right bought thousands of pound worth of parts and  still need to buy loads but after some advice and after doing a lot of research i  still have know luck,
anyway
injector sizes ? reading on certain builds people using anything from 400 to 800cc injectors is there a best size to fit  or just trial and error ?

turbo oil feed and drain where are these located?
ive seen some people drill a hole into the sump and weld a fitting but surely there is something better than this ?

 valve springs will standard items take the abuse or is it going to be the case of something ive got to upgrade

and  the last one clutch, cant really find a lot on this but what are people using the only one ive found is on ebay from the states a stage 3 paddle clutch 

Your choice,  but why turbo an abf when actual turbo engines are readily available?   Clutch… what about a vr6 unit which will bolt on to the abf flywheel.  Valve springs… unless increasing revs surely standard are alright.  Oil drain….yes weld/bolt something to the sump is the standard practice I believe.

abfmk1 said

Your choice,  but why turbo an abf when actual turbo engines are readily available?   Clutch… what about a vr6 unit which will bolt on to the abf flywheel.  Valve springs… unless increasing revs surely standard are alright.  Oil drain….yes weld/bolt something to the sump is the standard practice I believe.

Well I was going to mix and match a bam engine but wanted Something different  to turbo plus seeing  quite a a lot of 1.8t/pd engines so ended up going Abf , yes I've had a look on the vr6 clutches but are they worth double the price than a clutch that is intended for the abf. I am right in thinking that the vr6 unit is bigger than the normal unit ? And oh i see though it was a  boj job with the oil drain