Im building up a AE86 trackster and have to goal of 300kw or more in mind.

At the moment im looking at what turbos will give me this sort of power at what boost as well as when they start spooling?

Has anyone here had a play with larger turbos on the 4AG block?

Yes I know that there will be a large amount of lag to the point of people saying it will be undrivable but I will be putting measures into place to combat this so don’t every one keep bringing this up.

What sort of boos can the 4AG blocks handle? Im trying to guage if I should grout and sleve my block to handle the higher pressure.

If any one can help here its much appreciated.