hey there.
i have recently changed my headunit and found out that there is no pre-outs to run my amp . is there anyway which i can do to run my amp for my speakers.
Probably best to get another headunit. If your amp doesn't have high level inputs then you can get a converter type thing from Jaycar that you plug your headunit speaker wires into and it outputs them as RCAs so you can still use an amp. DSE might even have them too, have a bit of a search around.