Yes, in fact there are a couple of options, there are conversion kits and there are the basic pumps:
The single normal pumps look like this: http://www.ebay.com/itm/VRO-PUMP-REPLACEMENT-FOR-INLINE-OR-90degree-V4-90-115hp-JOHNSON-EVINRUDE-5007422-/171368492128?_trksid=p2141725.m3641.l6368
I have a couple of them on a 24' boat of mine right now both vro systems removed and converted to standard pumps.
Replacing your fuel lines and going through the entire fuel system is a great place to start.
I will continue to keep an eye out for your replies if you need any further help or have any other questions. In terms of the cooling issue, it's likely there may have been an air pocket or something that broke free.
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