MDA cross tolerance to any PEA or Tryptamine

[primal440]

hello, swim was wondering if there's any cross tolerance between MDA any any other psychedelic (LSD, RC's, mushrooms..) and if there is, how long would it last?
Also swim was wondering about intravenous use of MDA, he's read a report claiming succesful but has read a topic on IV MDMA and a lot of people may think its stupid, but if swim recalls exactly, that guy was IV'ing a pill, plus SWIM is aware of he risks involved and the not-so-desirable side effects from this route. If swim had a pure batch of MDA, how much would it take to feel the desired effects (including those given by courtesy of IV)? Thanks in advance.