Breakin or rather 1st hundred miles on 149k motor

[Phaze2ECU]

Picking up a GSX from joe P of joe p boost controllors, was wondering what the proper break in time is, if any for the following being done:
Reconditioned, slightly milled head
headgasket
tbelt, waterpump

Since no rings are beign seated is there any need for true break in or can it be driven on hard?

 

[Defiant]

Even though not much is really being "broken in", give it a couple of tanks of gas before romping it. Give things a chance to go through a few heating/cooling cycles together and to nestle in.

 

[Phaze2ECU]

thanks for the advice, I was thinking that it need at least a lil easy time before it gets the full abuse of stock boost

 

[Gooberlog]

When i do mods, i normaly will baby it around the blcok to make sure everything is ok, then drive it normal for a little bit and then maybe hit once to see if everything is ok. Drive the car gradualy.