PPA reduces to amphetamine not methamphetamine. It is the same as ephedrine just without the methyl group on the amine.
Also, yes it is also a precursor for ICE, or 4-methylaminorex (4-MAR). This is made by refluxing in H2O with a cyanate salt to form an intermediate. That can be cyanate (OCN-) or thiocyanate (SCN-) or whatever. Thiocyanate is used in photography so if you find the right supplier you can obtain lb's of it no questions asked. Thats where SWIM obtained his KSCN. Next the intermediate is refluxed in aqueous HCl, which will cyclize it and give water and 4-MAR (or if KSCN is used, H2S and 4-MAR). VERY easy and otc, easier than any method that reduces E to meth IMHO. The only thing that stops 4-MAR production is the availability of PPA.