Hmmmm,
First of all, If this is for a Cobra, any work can involve a lot more than meets the eye. It's not like a normal car where the tech looks in the parts catalog and orders the componant proven to work with the car. Let's look at it step by step.
1. replace fuel pump.- did they remove and replace a mechanical fuel pump, or convert to an electric? Converting would involve line work, running wires encorperating safty features like an inertial cut off switch and or an eng
oil press cut off...all tied to an approriatly designed and installed relay function...parts$ plus engineering$ plus procurement$ plus installation, plus testing, plus correction of any problems.
2.Heavier gauge wire to starter.- Due to a start problem? troubleshoot to determine this is called for=$, Procure wire, heatshrink, luggs, terminals=$ run wires using bigger clamps, hardware, alternate run?, crimp and heatshrink lugs install=$
All would be custom work. not just going to Nappa and replacing a battery cable from a catalog...
3.Installed distributor and wires:New distributor?=$ or $$$, depending on brand and ign unit...could involve incorpeerating aftermarket parts into wire harness=$, wire, terminals routing , design, troubleshooting, vacuum hoses....$, what kind of wires? Nappa cheapies or expensive super duper aftermarket units, which could involve cutting each wire to lenth and crimping the ternials on, maybe the wires are thicker and need special looms?=$
4.Flush cooling sytem: open petcock drain fluid...oh yeh, petcok stuck? need new one?=$ Radiator crapped up? did it need to be sent out and boiled?=$ if so, remove it, and install it.=$
Broke in cam: one guy to moniter engine parameters, one guy to tweak the eng to keep it running at rpm, maybe one guy manning the garden hose to cool the radiator if needed=$x3?
Fix a couple of water leaks: leaky water pump? procure new gaskets, sealent, losten alternator and other accessories, remove belts, remove pump, clean hardware, scrape old gasket off pump and engine, clean and dry surfaces, reinstall pump, belts tension and tighten same=$, maybe same for water neck?or freeze plugs?
fixed coulpe of seeping
oil cooler lines: New A/N fittings?, new o-rings? stripped threads? new line-braided?-would need to be cut to lenth and fittings intalled=$,
Vaccuum leak: t/s, fittings? hoses? componants?
Ok, I am sure you car did not involve all that, but you get the idea. there can be, and usually is a lot more to this stuff than meets the eye. We would need to know specifics to determine if you paid to much.
Steven