Enhanced Portals Mod 1.7.10/1.7.2 For Minecraft?

Enhanced Portals allows you to create any size or shape Nether portal that you want. Unlike other mods, this mod has no limit on the size of the portal you want to create - as long as it's a valid portal (a frame of obsidian with nothing else in the way) - you're good to go.

What if you don't like the boring purple colour portal? Simply take any one of the 16 dyes and use it on the portal, the dye will get used up and the portal will become that colour. You can even use these portals as decoration.

Portal Creation
When creating a Nether portal with a default Flint & Steel, you can only create portals that consist of 6 portal blocks. To create bigger or smaller portals you must first upgrade your Flint & Steel with two pieces of Glowstone. This will allow you to create any size portals and will also double it's durability to 128.

Portal Modifier
Enhanced Portals Mod
The Portal Modifier is the main block in this mod, it allows you to modify your portals in various different ways, you can also install upgrades to further increase their functionality. From changing the portals texture to Ice, to removing particle/sound effects for each portals, to changing the portal frame to Quartz.
When used together with other portal modifiers, you can create networks of portal modifiers that will, when you enter the portal, (and providing you have the correct upgrades) take you to the next portal in the network.