Engine choises for a 93?

I strongly belive this car is a 93 Elantra now 16v DOHC

now is there any way to use a newer engine for a newer elantra?

this?
http://cgi.ebay.com/Brand-New-Hyundai-Elantra-DOHC-1-8L-engine_W0QQitemZ290019558404QQihZ019QQcategoryZ336 15QQrdZ1QQcmdZViewItem
http://cgi.ebay.com/96-97-98-TIBURON-ELANTRA-ENGINE-DOHC-1996-1997-1998_W0QQitemZ250019077349QQihZ015QQcategoryZ33615 QQrdZ1QQcmdZViewItem

?

any stock engines I can order online?

I'm not sure if there are any direct swaps to newer Elantra engines. The '93 Elantra had a Mitsubishi engine, so you're probably more likely to find a newer Mitsu engine that would be a direct swap. I've heard of people swapping for other Mitsu engines to boost the power, but I imagine there are some direct swaps that would be comparable to the current one as well. Sorry I don't know more than that, but you might be able to check into it.

I'm not sure if there are any direct swaps to newer Elantra engines. The '93 Elantra had a Mitsubishi engine, so you're probably more likely to find a newer Mitsu engine that would be a direct swap. I've heard of people swapping for other Mitsu engines to boost the power, but I imagine there are some direct swaps that would be comparable to the current one as well. Sorry I don't know more than that, but you might be able to check into it.

I am just trying to find an engine that I can use that has good performance/cheaply

as I am finding it hard to find an engine for this 93 elantra..