Hello everyone, I just recently joined here!

Anyways, I was wondering if any of you could help me. I'm pretty sure this is the right section, but I'm not sure.
I downloaded iCenhancer 1.25, and used the beta for 1.0.7.0, because I have the Steam version. I don't want to downgrade it, so I tried the beta. It works flawlessly. My GPU isn't the greatest, so I had to turn Ambient Occlusion and Bloom off until I get a new one. Anyways, the ENB looks great, and I am pleased with it. (At roughly 30fps right now) Now, my question here is:
All of the ENB videos I see, the roads look amazing. Mine are the default textures. I KNOW that you need to download the textures manually, but, that's my problem.
The only road textures I've found were hosted on Megaupload. Which, all of you know, got shut down. So I can't download any ones. In fact, I can't find any ones. The only one I found is at the moment, incomplete. So I have come to you guys for help. Where can I get a good road texture pack? And is there a mod for "HD" vehicles? Because they too look amazing in the videos I see.
My game information is as follows:
Grand Theft Auto IV - 1.0.7.0. (Steam)
No expansions or DLC
Mods: iCenhancer 1.25 Close up car camera blur fix (Makes the cars shiny even up close)
PC information:
Phenom II x4 975 (3.6ghz quad core)
XFX Radeon 5570 1gb (This is holding me back, will be getting a 6850 soon.)
m4a87td motherboard
5gb of ddr3 1333mhz ram
Windows 7 Professional 64-bit.
Help?